Low-flow irrigation systems, called low volume irrigation or microirrigation, is an irrigation method that operates under a lower water pressure than standard service systems, with a “lower-flow” resulting when combined with water delivery components manufactured for this application.
Use of Low volume irrigation and Microirrigation systems on green building candidate projects can help them to “accumulate points” for LEED – (Leadership in Energy and Environmental Design) certification rating and awards.
Low-flow irrigation systems can use drip emitters, trickle-“spider spray”, micro spray-sprinklers, and-or mist emitters; to distribute irrigation water slowly in small volumes and targeting it to plants’ root zones with less / no runoff or “overshooting” or landscape and garden “regular flow” conventional spray and rotary sprinklers. The low volume allows the water to penetrate and be absorbed into slow-percolation soils, such as clay, and those with a ‘packed dirt’ hard surface, minimizing water runoff.
With any application finer gauge and flush-able inline filtration, pressure regulation for reduced static and dynamic GPM (gallons per minute), and manual shutoff valves for repair, additions, and adjustment is required. Since water conservation is a frequent reason for choosing Low-flow irrigation systems, also installing moisture sensors, rain shutoffs, wind shutoffs, and the new computerized ET Controllers significantly enhance water expense reductions, resource conservation, and sustainable agriculture and sustainable landscaping.